Process for protecting leathers, skins, fabrics, and the like during their manipulation or making up into manufactured goods



Patented Feb. 25, 1936 UNITED .STATES PATENT OFFICE PROCESS FOR PROTECTING LEATHERS,

SKINS, FABRICS, AND THE LIKE DURING THEIR MANIPULATION OB MAKING UP INTO MANUFACTURED GOODS Robert Schneider, Paris, and Armand Poelman,

Charcnton, France, assignors to Materials Protector Corporation, Newest-N. J., a corpora-- tion of. New Jersey No Drawing. Application December 4, 1929, Serial No. 411,668. In.- France December 8, 1928 z- Claims. (01. 91-68) Leathers, skins, imitation-leathersfabrics and the like employed in the manufacture of fancy leather goods, the making of shoes and industries .of the same kind; undergo duringtheir various transformations, their manipulation and their shaping by machine or by hand, deteriorations and markings, which it is almost impossible to avoid. This drawback is particularly noticeable in the case of leathers, skins, fabrics, etc; of light colour or white, which whatever steps be taken cannot recover their original bloom.

The process forming the object of the invention allows of obviating this drawback; It consists in Y covering the leathers, skins, fabrics, etc., before 54 their use, with a protective coating, elastic in order to allow distortion during the stretching or shaping, and-slightly adherent so as not to become detached in the course of the various manipulations, but to be able to be removed without dam- 5 8 8 the surface which it. covers, either at. the

end of the manufacture or even only 'at'the time .of-sale of the article.

There inay be .employed for this purpose plastic films constituted for example by cellulose acetate, -25 nitrocellulose, ben zyl-cellulose, etc., rendered plastic by various organic solvents phor, castor oil, etc. V There can lik' wise be utiiized thin sheets of 'guttaperch'a, coatings having abase of india .In the case or. cellulosic plastic materialaadhesion is obtained either by a partial dissolution of the plastic material and calendaring, or by hot or by cam-'- calendaring, or again by direct pouring of a film, precautions being taken lest it be tooadhesive; for example the surface to be protected may be first moistened with benzine, or with a body precipitating' the solution. 5

l. The method of temporarily protecting the surface of leathenfabric or similar articles dur-' ing their manufacture and handling which consists in applying to the surface to be protected a layer of benzyl-cellulose mixed with castor oil .so that it is moderately adhesive to said surface and easy to be peeled off, when protection of said i surface is no longer required.

'2. 'The method of temporarily protecting. the surface of leather, fabric or similar articles during their manufacturing and handling, which comprises applying to the surface to be protected a thin layer of 'benzyl-cellulose mixed \with aplastifying agent so that it is moderately adhesive to said surface, and easy to be-to'm ofi when protection of said surface is no longer required. so

ROBERT SCHNEIDER. ARMANI) POELMAN. 

